What is the purpose of a control sample that is known to be from bighead
carp in eDNA surveillance for bighead carp?
O
A. To use as a positive control to compare with the markers of
known fragment sizes
O
0
B. To use as a positive control to see if there are bighead carp
present in the area
O
C. To use as a negative control to compare with the markers of
known fragment sizes
O
D. To use as a negative control to see if there are bighead carp
present in the area

read the sentence below and answer the question that follows. one of the norms in the village was to meet at the town square on fridays for a community dinner and dance. the underlined word in the sentence above is best defined as a a. cultural element shared by all people around the world b. specific area in a town used for traditional community events c. religious custom accepted and practiced by all members of a village d. behavioral pattern that is regularly accepted by a group of people